import {defineStore} from 'pinia';
import {TagsViewState} from '@/types/store/tagsview';

const useTagsViewStore = defineStore({
    id: 'tagsView',
    state: (): TagsViewState => ({
        visitedViews: [],
        cachedViews: [], //  keepAlive 缓存页面
    }),
    actions: {
        addVisitedView(view: any) {
            if (this.visitedViews.some((v) => v.path === view.path)) return;
            if (view.meta && view.meta.affix) {
                this.visitedViews.unshift(
                    Object.assign({}, view, {
                        title: view.meta?.title || 'no-name',
                    })
                );
            } else {
                this.visitedViews.push(
                    Object.assign({}, view, {
                        title: view.meta?.title || 'no-name',
                    })
                );
            }
        },
        addCachedView(view: any) {
            if (this.cachedViews.includes(view.name)) return;
            if (view.meta.keepAlive) {
                this.cachedViews.push(view.name);
            }
        },
        delVisitedView(view: any) {
            return new Promise((resolve) => {
                for (const [i, v] of this.visitedViews.entries()) {
                    if (v.path === view.path) {
                        this.visitedViews.splice(i, 1);
                        break;
                    }
                }
                resolve([...this.visitedViews]);
            });
        },
        delCachedView(view: any) {
            return new Promise((resolve) => {
                const index = this.cachedViews.indexOf(view.name);
                index > -1 && this.cachedViews.splice(index, 1);
                resolve([...this.cachedViews]);
            });
        },
        delOtherVisitedViews(view: any) {
            return new Promise((resolve) => {
                this.visitedViews = this.visitedViews.filter((v) => {
                    return v.meta?.affix || v.path === view.path;
                });
                resolve([...this.visitedViews]);
            });
        },
        delOtherCachedViews(view: any) {
            return new Promise((resolve) => {
                const index = this.cachedViews.indexOf(view.name);
                if (index > -1) {
                    this.cachedViews = this.cachedViews.slice(index, index + 1);
                } else {
                    // if index = -1, there is no cached tags
                    this.cachedViews = [];
                }
                resolve([...this.cachedViews]);
            });
        },

        updateVisitedView(view: any) {
            for (let v of this.visitedViews) {
                if (v.path === view.path) {
                    v = Object.assign(v, view);
                    break;
                }
            }
        },
        addView(view: any) {
            this.addVisitedView(view);
            this.addCachedView(view);
        },
        delCurrentView(_this: any) {
            const view = _this.$route
            for (const v of this.visitedViews) {
                if (v.path === view.path) {
                    return new Promise((resolve) => {
                        this.delVisitedView(v);
                        this.delCachedView(v);
                        resolve(null);
                    });
                }
            }
        },
        delView(view: any) {
            return new Promise((resolve) => {
                this.delVisitedView(view);
                this.delCachedView(view);
                resolve({
                    visitedViews: [...this.visitedViews],
                    cachedViews: [...this.cachedViews],
                });
            });
        },
        delOtherViews(view: any) {
            return new Promise((resolve) => {
                this.delOtherVisitedViews(view);
                this.delOtherCachedViews(view);
                resolve({
                    visitedViews: [...this.visitedViews],
                    cachedViews: [...this.cachedViews],
                });
            });
        },
        delLeftViews(view: any) {
            return new Promise((resolve) => {
                const currIndex = this.visitedViews.findIndex(
                    (v) => v.path === view.path
                );
                if (currIndex === -1) {
                    return;
                }
                this.visitedViews = this.visitedViews.filter((item, index) => {
                    // affix:true 固定tag，例如“首页”
                    if (index >= currIndex || (item.meta && item.meta.affix)) {
                        return true;
                    }

                    const cacheIndex = this.cachedViews.indexOf(item.name as string);
                    if (cacheIndex > -1) {
                        this.cachedViews.splice(cacheIndex, 1);
                    }
                    return false;
                });
                resolve({
                    visitedViews: [...this.visitedViews],
                });
            });
        },
        delRightViews(view: any) {
            return new Promise((resolve) => {
                const currIndex = this.visitedViews.findIndex(
                    (v) => v.path === view.path
                );
                if (currIndex === -1) {
                    return;
                }
                this.visitedViews = this.visitedViews.filter((item, index) => {
                    // affix:true 固定tag，例如“首页”
                    if (index <= currIndex || (item.meta && item.meta.affix)) {
                        return true;
                    }

                    const cacheIndex = this.cachedViews.indexOf(item.name as string);
                    if (cacheIndex > -1) {
                        this.cachedViews.splice(cacheIndex, 1);
                    }
                    return false;
                });
                resolve({
                    visitedViews: [...this.visitedViews],
                });
            });
        },
        delAllViews() {
            return new Promise((resolve) => {
                const affixTags = this.visitedViews.filter((tag) => tag.meta?.affix);
                this.visitedViews = affixTags;
                this.cachedViews = [];
                resolve({
                    visitedViews: [...this.visitedViews],
                    cachedViews: [...this.cachedViews],
                });
            });
        },
        delAllVisitedViews() {
            return new Promise((resolve) => {
                const affixTags = this.visitedViews.filter((tag) => tag.meta?.affix);
                this.visitedViews = affixTags;
                resolve([...this.visitedViews]);
            });
        },
        delAllCachedViews() {
            return new Promise((resolve) => {
                this.cachedViews = [];
                resolve([...this.cachedViews]);
            });
        },
    },
});

export default useTagsViewStore;
